code: def testRegression(self):
      self.trapezium()
      self.doubleTrapezium()
  
file_path: essentia/test/src/unittests/highlevel/test_fadedetection.py
imports: from numpy import *
  from essentia_test import *
label_desc: Use image node_id 6 for calling the TestFadeDetection obj's underlying member method code with example usage: obj.testRegression() without return types